Experimental study of the characteristics of novel microactuator based on optothermal expansion  

作　　者：刘超 

机构地区：[1]State Key Laboratory of Modern Optical Instrumentation,Zhejiang University

出　　处：《High Technology Letters》2009年第2期131-134,共4页高技术通讯（英文版）

基　　金：Supported by the National High Technology Research and Development Program of China (No. 2006AA04Z237);the National Natural Science Foundation of China (No. 50775205)

摘　　要：A novel asymmetric optothermal microactuator was developed. A microactuator of 750μm length was machined by an excimer laser micmmachining system using single layer material. It had an asymmetric structure consisting of two thin expansion arms with different widths. A laser diode （660nm） was employed as the external power source to activate the microactuator. We introduced a charge coupled device （CCD）-combined optical microscope and a computer system to observe and capture the microactuator＇ s deflection and vibration. Experiments have been carried out to check the feasibility of deflection, and the data of deflection have been measured under different laser power as well as under different pulse frequency. The results show that the actuator can practically generate an obvious lateral deflection or vibration, the maximum could be larger than 20μm. Moreover, the deflection status of the microactuator could be controlled wirelessly or remotely by changing the laser power and its pulse frequency.A novel asymmetric optothermal microactuator was developed.A microactuator of 750μm length wasmachined by an excimer laser micromachining system using single layer material.It had an asymmetricstructure consisting of two thin expansion arms with different widths.A laser diode(660nm)was em-ployed as the external power source to activate the microactuator.We introduced a charge coupled device(CCD)-combined optical microscope and a computer system to observe and capture the microactuator' sdeflection and vibration.Experiments have been carried out to check the feasibility of deflection,and thedata of deflection have been measured under different laser power as well as under different pulse frequen-cy.The results show that the actuator can practically generate an obvious lateral deflection or vibration,the maximum could be larger than 20μm.Moreover,the deflection status of the microactuator could becontrolled wirelessly or remotely by changing the laser power and its pulse frequency.

关 键 词：optothermal expansion MICROACTUATOR asymmetric structure DEFLECTION VIBRATION 

分 类 号：TP21[自动化与计算机技术—检测技术与自动化装置]